Refactor logging messages for consistency and clarity

- Updated various logging messages across the application to replace Russian text with English equivalents, ensuring consistency in error and information logs.
- Enhanced clarity in log messages related to Telegram bot operations, user management commands, and health check services, improving overall traceability and understanding of application behavior.

backend/src/PnvPanel.Api/Program.cs

@@ -100,8 +100,8 @@ var app = builder.Build();
 if (string.IsNullOrWhiteSpace(builder.Configuration["DataProtection:KeyRingPath"]))
 {
     app.Logger.LogWarning(
-        "DataProtection:KeyRingPath не задан — ключи шифрования секретов нод не персистентны " +
-        "и будут потеряны при пересоздании контейнера. В проде обязательно смонтируй том и укажи путь.");
+        "DataProtection:KeyRingPath is not set — node secret encryption keys are not persistent " +
+        "and will be lost when the container is recreated. Mount a volume and set the path in production.");
 }
 
 // Авто-применение миграций и идемпотентный сидинг (роли + админ из env) на старте.